This corpse was found by Enterprise in a shipwreck adrift in space in 2152. The remains were initially speculated to be those of Zefram Cochrane, who had been rumored to have been piloting a single-person spacecraft at the time of his disappearance in the early 22nd century.
The body was mainly Human, but Phlox discovered strange patterns in the corpse's DNA. It contained DNA segments from many different species, notably Vulcan, Terrellian and Rigellian ones, as a result of several generations of interspecies breeding. To that end, Phlox determined the likeliest explanation for the pilot's nucleotide sequence being Vulcan was that he had at least one Vulcan ancestor further back than a great-grandparent. Since there were, at this point, no known instances of Human/Vulcan breeding, and the official first contact between the two species had occurred only 89 years earlier, it was concluded that this Human was from the future. Captain Jonathan Archer discovered after referring to the database in Daniels' quarters that the ship was from the 31st century. (ENT: "Future Tense")